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Lesson 2
| Term | Definition |
|---|---|
| Cell wall | A cell wall is a rigid layer that surrounds the cell membrane of plant cells. |
| Cell membrane | The cell membrane is a barrier that surrounds cells. |
| Nucleus | The nucleus stores genetic material and commands other organelles. |
| Organelle | An organelle is a specialized structure within a cell. |
| Ribosome | A ribosome produces proteins. |
| Cytoplasm | The thick fluid region of a cell located inside the cell membrane or between the cell memory and nucleus |
| Mitochondria | The mitochondria often referred to as the "powerhouses" of the cell because they generate most of the cell’s energy. |
| Endoplasmic reticulum | The endoplasmic reticulum is a multifunctional cellular organelle responsible for protein synthesis, lipid metabolism, and calcium storage, existing in two main forms: rough ER and smooth ER. |
| Golgi apparatus | The Golgi apparatus is critical for modifying, packaging, and sorting proteins and lipids for transport within and outside the cell. |
| Vacuole | A sac-like organelle that stores water, food and other materials. |
| Lysosome | Lysosomes act as the cell’s digestive system, breaking down waste materials, cellular debris, and macromolecules into reusable components. |
| multicellular | Consisting of many cells. |
| unicellular | Made of one cell |
| Tissue | A group of similar cells that perform a specific function. |
| Organ | A body structure that is composed of different kinds of different kinds of tissues that work together. |
| Organ system | The organ system consists of various organelles that work together to maintain cellular functions, much like organs in a body coordinate vital activities. |
| Specialized cell | Specialized cells are cells that have developed unique structures and functions to perform specific tasks within an organism. |
| Division of Labor | The division of labor within a cell refers to the specialized functions performed by various organelles, enabling the cell to operate efficiently and fulfill its biological roles. |
| List what is inside the nucleus | The nucleus in a cell contains DNA, RNA, proteins, and specialized substructures that coordinate genetic and regulatory functions. |
| Describe the difference between animal and plant cell structures | they differ in the presence of specific structures like cell walls, chloroplasts, and large central vacuoles in plants. |
| Describe what the Endoplasmic reticulum does for ribosomes | The endoplasmic reticulum (ER), specifically the rough ER, provides a surface for ribosomes to attach and facilitates the synthesis, folding, modification, and transport of proteins. |
| Where ribosomes are made and why they are so important | Ribosomes are made in the nucleolus of the cell and are essential because they serve as the molecular machines that synthesize proteins, which are crucial for virtually all cellular functions. |